How Many Board Feet In An 8 4 Board 6 Inches Wide 8 Feet Long
8 board feet
- Rough 8/4 (2" thick)
- Width: 6"
- Length: 8 ft
Methodboard feet = (thickness x width x length in feet) / 12, using the ROUGH thickness before surfacing.
8/4 stock is commonly bought for turning blanks and thick furniture parts — confirm your supplier prices off rough or surfaced thickness before ordering.
A rough 8/4 board, 6" wide and 8' long, contains exactly 8 board feet — a clean number that falls out of the arithmetic here purely by coincidence of these specific dimensions, not because 8/4 stock generally rounds evenly.
Why this one specifically
8/4 (a full 2" rough) is the thickness turners and furniture-makers reach for when a project needs real bulk — turning blanks and chunky table legs — and it's priced at a meaningfully higher per-board-foot rate than 4/4 stock from the same species at most yards, because thicker material is both rarer in the log and slower to kiln-dry without checking.
What moves the number
As with any rough hardwood, this figure uses the full 2" ROUGH thickness before any surfacing — confirm with your specific supplier whether their price sheet quotes rough or surfaced thickness, since the two conventions produce genuinely different board-foot totals for what looks like "the same" board on a shelf.
See what 8/4 means for the quarter-system notation, /reference/rough-lumber-quarter-system/ for the full thickness table, and compare against the 4/4 board at a different thickness — or run your own dimensions through the board foot calculator.